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Piston for hydraulic valve for cam phaser and hydraulic valve for cam phaser

A technology of phase adjuster and camshaft, which is applied in the field of hydraulic valves and can solve problems such as high cost and high assembly cost

Active Publication Date: 2017-09-22
ECO HLDG 1 GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, either a complex housing design is required for receiving and securing the non-return valve, or the housing is constructed in multiple parts and requires high assembly costs

Method used

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  • Piston for hydraulic valve for cam phaser and hydraulic valve for cam phaser
  • Piston for hydraulic valve for cam phaser and hydraulic valve for cam phaser
  • Piston for hydraulic valve for cam phaser and hydraulic valve for cam phaser

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Embodiment Construction

[0043] The hydraulic valve 1 according to the invention for a camshaft phaser, not shown in more detail, for a camshaft not shown in more detail is constructed in accordance with figure 1 of the first embodiment. The hydraulic valve 1 is designed to be accommodated as a central valve in a rotor of the camshaft phaser, which is not shown in more detail. In other words, the hydraulic valve 1 is accommodated in the central opening of the camshaft phaser at least partially surrounded by said camshaft phaser.

[0044] The hydraulic valve 1 has a housing 2 which is designed to flow through. A plurality of connections A, B, P, T1 , T2 are provided on the housing 2 for the hydraulic supply of the camshaft phaser. In the housing 2 , a piston 4 , which is axially movable along the first longitudinal axis 3 of the hydraulic valve 1 , is accommodated in a central opening 5 of the housing 2 . The housing 2 is in most cases of tubular design.

[0045] The camshaft phaser makes it possib...

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Abstract

The invention relates to a piston for a hydraulic valve of a camshaft phase adjuster, wherein the piston (4) is designed as a hollow cylinder, and wherein the piston (4) in a along a first longitudinal axis (3) of a housing (2) of the hydraulic valve (1) extending central opening (5) is axially movable, wherein in accordance with a positioning of the piston (4) in particular working ports (A, B) of the housing (2) are opened and locked, and wherein the piston (4) to avoid an undesirable outflow of a piston (4 ) flowing hydraulic fluid from an interior (9) of the piston (4) in the working ports (A, B) associated flow openings (29, 30) of the piston (4) check valves (25; 26). According to the invention, the piston (4) in the direction of its interior (9) opening check valves (25; 26) in its interior (9) receiving, which are fixed by means of a between the two check valves (25, 26) arranged spacer element (27) , Furthermore, the invention relates to a hydraulic valve for a camshaft phase adjuster a camshaft.

Description

technical field [0001] The invention relates to a piston for a hydraulic valve for a camshaft phaser according to the preamble of claim 1 and a hydraulic valve for a camshaft phaser for a camshaft according to claim 10 . Background technique [0002] Hydraulic valves for camshaft phasers of camshafts of internal combustion engines are well known. The hydraulic valve has an axially movable piston within the housing of the hydraulic valve, by means of which the hydraulic loading of the camshaft phaser is adjusted. Hydraulic valves come in a variety of different construction types. The housing is hollow-cylindrical. The piston is also of hollow-cylindrical design. The hydraulic adjustment of the camshaft phaser takes place by means of the seating of the flow-through piston and the corresponding release or closing of the joint formed on the housing. [0003] From the publications DE 10 2013 104 573 A1 and DE 10 2013 104 575 A1 hydraulic valves are known which have a supply c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L1/344
CPCF01L1/3442F01L2001/34423F01L2001/3445
Inventor 布伦特·布勒丹尼尔·斯坦霍普
Owner ECO HLDG 1 GMBH
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